Variational approach to hyperbolic free boundary problems

Bibliographic Information

Variational approach to hyperbolic free boundary problems

Seiro Omata, Karel Svadlenka, Elliott Ginder

(SpringerBriefs in mathematics)

Springer Nature Singapore, 2022

  • pbk.

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Includes bibliographical references

Description and Table of Contents

Description

This volume is devoted to the study of hyperbolic free boundary problems possessing variational structure. Such problems can be used to model, among others, oscillatory motion of a droplet on a surface or bouncing of an elastic body against a rigid obstacle. In the case of the droplet, for example, the membrane surrounding the fluid in general forms a positive contact angle with the obstacle, and therefore the second derivative is only a measure at the contact free boundary set. We will show how to derive the mathematical problem for a few physical systems starting from the action functional, discuss the mathematical theory, and introduce methods for its numerical solution. The mathematical theory and numerical methods depart from the classical approaches in that they are based on semi-discretization in time, which facilitates the application of the modern theory of calculus of variations.

Table of Contents

Chapter 1. Introduction.- Chapter 2.Physical motivation.- Chapter 3.Discrete Morse flow.- Chapter 4. Discrete Morse flow with free boundary.- Chapter 5.Energy-preserving discrete Morse flow.- Chapter 6.Numerical examples and applications.

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